01251+4537 A   939

 
 
01H 25M 06.75S +45 36' 31.0" P.A. 203.9 SEP 0.2 MAG 8.94,9.09 SP F0 DIST. 180.18 PC (587.75 L.Y.)
 
 
Coord 2000
01251+4537
Discov num
A   939
Comp
Coord arcsec 2000
01 25 06.75 +45 36 31.0
Date first
1905
Date last
2010
Obs
37
Pa first
264
Pa last
195
P.A. Now (θ)
203.9°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.2"
Mag pri
8.94
Mag sec
9.09
delta mag (ΔM)
0.15
Spectral class
F0 (yellow-white)
Pri motion ra
-017
Sec motion ra
Pri motion dec
-021
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Andromeda
SAO
37184
HIP
6633
Tycho2
3265-00290-1
HD
8528
ADS
1126
BD
BD+44 296
Distance
180.18
Distance ly
587.75
last precise pa
194.9
last precise sep
0.23
 
 
ORBITAL ELEMENTS
 
 
Period (P)145.64y Periastron (T)1962.5y Semi-major axis (a)0.185a
Eccentricity (e)0.196 Inclination (i)19.4° Longitude of periastron (ω)273.6°
Node (Ω)143.5° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2010
label rho theta
2000 0.191 170.1
2001 0.192 172.2
2002 0.193 174.3
2003 0.194 176.4
2004 0.195 178.5
2005 0.196 180.5
2006 0.197 182.5
2007 0.198 184.5
2008 0.199 186.5
2009 0.199 188.5
2010 0.200 190.5
2011 0.201 192.4
2012 0.201 194.4
2013 0.202 196.3
2014 0.203 198.2
2015 0.203 200.1
2016 0.204 202.0
2017 0.204 203.9
2018 0.205 205.8
2019 0.205 207.6
2020 0.205 209.5
2021 0.206 211.3
2022 0.206 213.2
2023 0.206 215.0
2024 0.207 216.8
2025 0.207 218.7
2026 0.207 220.5
2027 0.208 222.3
2028 0.208 224.1
2029 0.208 225.9
2030 0.208 227.7

Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic